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| Rev | Author | Line No. | Line |
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| 647 | cejka | 1 | /* |
| 2 | * Copyright (C) 2005 Josef Cejka |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #ifndef __SFTYPES_H__ |
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| 30 | #define __SFTYPES_H__ |
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| 31 | |||
| 32 | typedef union { |
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| 33 | float f; |
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| 652 | cejka | 34 | __u32 binary; |
| 35 | |||
| 647 | cejka | 36 | struct { |
| 37 | #ifdef __BIG_ENDIAN__ |
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| 38 | __u32 sign:1; |
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| 39 | __u32 exp:8; |
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| 40 | __u32 mantisa:23; |
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| 41 | #elif defined __LITTLE_ENDIAN__ |
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| 42 | __u32 mantisa:23; |
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| 43 | __u32 exp:8; |
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| 44 | __u32 sign:1; |
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| 45 | #else |
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| 46 | #error "Unknown endians." |
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| 47 | #endif |
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| 48 | } parts __attribute__ ((packed)); |
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| 49 | } float32; |
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| 50 | |||
| 51 | typedef union { |
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| 52 | double d; |
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| 652 | cejka | 53 | __u64 binary; |
| 54 | |||
| 647 | cejka | 55 | struct { |
| 56 | #ifdef __BIG_ENDIAN__ |
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| 57 | __u64 sign:1; |
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| 58 | __u64 exp:11; |
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| 59 | __u64 mantisa:52; |
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| 60 | #elif defined __LITTLE_ENDIAN__ |
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| 61 | __u64 mantisa:52; |
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| 62 | __u64 exp:11; |
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| 63 | __u64 sign:1; |
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| 64 | #else |
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| 65 | #error "Unknown endians." |
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| 66 | #endif |
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| 67 | } parts __attribute__ ((packed)); |
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| 68 | } float64; |
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| 69 | |||
| 70 | #define FLOAT32_MAX 0x7f800000 |
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| 71 | #define FLOAT32_MIN 0xff800000 |
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| 72 | #define FLOAT64_MAX |
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| 73 | #define FLOAT64_MIN |
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| 74 | |||
| 661 | cejka | 75 | /* For recognizing NaNs or infinity use isFloat32NaN and is Float32Inf, comparing with this constants is not sufficient */ |
| 76 | #define FLOAT32_NAN 0x7F800001 |
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| 77 | #define FLOAT32_SIGNAN 0x7FC00000 |
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| 78 | #define FLOAT32_INF 0x7F800000 |
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| 79 | |||
| 688 | cejka | 80 | #define FLOAT32_MANTISA_SIZE 23 |
| 697 | cejka | 81 | #define FLOAT64_MANTISA_SIZE 52 |
| 688 | cejka | 82 | |
| 731 | cejka | 83 | #define FLOAT32_HIDDEN_BIT_MASK 0x800000 |
| 732 | cejka | 84 | #define FLOAT64_HIDDEN_BIT_MASK 0x10000000000000ll |
| 731 | cejka | 85 | |
| 732 | cejka | 86 | #define FLOAT32_MAX_EXPONENT 0xFF |
| 87 | #define FLOAT64_MAX_EXPONENT 0x8FF |
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| 88 | |||
| 688 | cejka | 89 | #define FLOAT32_BIAS 0x7F |
| 647 | cejka | 90 | #define FLOAT64_BIAS 0x3FF |
| 91 | #define FLOAT80_BIAS 0x3FFF |
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| 92 | |||
| 93 | |||
| 94 | #endif |
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| 95 |